﻿<!doctype html>
<html>
<head>
  <title>并集选择符</title>
  <style type="text/css">
    h1,h2,h3,h4,h5,h6,p{
        margin:0;
        padding:0;
        height:20px;
        Line-height:20px;
        font-size:14px;
        color:#F00;
        Line-weight:bold;
     }
  </style>
</head>
<body>
   <h1>1.xxxxxxxxx</h1>
   <h2>2.xxxxxxxxx</h2>
   <h3>3.xxxxxxxxx</h3>
   <h4>4.xxxxxxxxx</h4>
   <h5>5.xxxxxxxxx</h5>
   <h6>6.xxxxxxxxx</h6>
   <p>这是一个P段落</p>
</body>
</html>